Germany's big worry: Not Greece but China.

BERLIN (Reuters) - Berlin, not Brussels, will decide the future of the ailing eurozone because Germany's economic power and its status as the European Union's main paymaster give it an effective veto over key decisions.

So it comes as a surprise to find that in Berlin's corridors of power, the main worry is not whether Greece sticks to its reform pledges or Spain demands an EU bailout.

As the world's third largest exporting nation, Germans are far more concerned about whether China loses its appetite for their machine tools and cars, or about what the famed Teutonic manufacturers should make in the year .